My research interests are mobile computing and wireless communication. This research project will focus on wireless network, specifically in the Wireless Local Area Network (WLAN) and wireless network security. Through this research, I anticipate to create a better method to optimize the security of wireless communication using mobile devices, e.g. Handhelds computers, Personal Digital Assistants (PDA) and laptop computers. I propose a possible thesis for this research, Implementation of Reliable Wireless Local Area Network (WLAN) using Data Encryption Security Method.